Elon musk has talked a bit about this company. The goal is to develop a device which will help increase our low output "bandwidth", not make us smarter.
Has the feasibility of such a thing even been explored before? I wouldn't be so fast to dismiss it, I know some types of information have already been decoded from the brain, at least parts of their goal have been proven to be conceptual possible.
https://thenextweb.com/artificial-intelligence/2018/03/06/mi...